WO2017002225A1 - Transformateur - Google Patents

Transformateur Download PDF

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Publication number
WO2017002225A1
WO2017002225A1 PCT/JP2015/068958 JP2015068958W WO2017002225A1 WO 2017002225 A1 WO2017002225 A1 WO 2017002225A1 JP 2015068958 W JP2015068958 W JP 2015068958W WO 2017002225 A1 WO2017002225 A1 WO 2017002225A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic
plates
magnetic shield
iron core
winding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2015/068958
Other languages
English (en)
Japanese (ja)
Inventor
敏広 野田
貴幸 今津
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2015559337A priority Critical patent/JPWO2017002225A1/ja
Priority to PCT/JP2015/068958 priority patent/WO2017002225A1/fr
Publication of WO2017002225A1 publication Critical patent/WO2017002225A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support

Definitions

  • the present invention relates to a transformer, and more particularly to a vehicle-mounted transformer.
  • railway vehicles such as the Shinkansen are required to realize high speed and mass transportation.
  • it is necessary to reduce the size and weight of the accessory equipment mounted on the railway vehicle.
  • in-vehicle transformers have increased in capacity in order to meet the demand for higher speed and mass transportation.
  • Patent Document 1 Japanese Utility Model Publication No. 63-2320031
  • the thin plate stacking direction of the magnetic shield core is set to be 90 ° different from the stacking direction of the leg core, and the coil insulation group and the leg core are properly aligned. It is equipped with a block for tightening and fixing with high strength and a protective plate for block insertion.
  • the present invention has been made in view of the above-described problems, and an object thereof is to provide a transformer having a large capacity while being reduced in size and weight.
  • the transformer based on this invention is laminated
  • the present invention it is possible to increase the capacity while reducing the size and weight of the transformer by reducing the arrangement space of the blocks and shortening the total length of the winding.
  • FIG. 4 is a cross-sectional view of the assembly structure of FIG. 3 as viewed from the direction of arrows IV-IV. It is a perspective view which shows the structure of the magnetic shield with which the transformer which concerns on one Embodiment of this invention is provided.
  • FIG. 6 It is a perspective view which shows the structure of the magnetic shield with which the transformer which concerns on the 1st modification of this embodiment is provided. It is the figure which looked at the magnetic shield of FIG. 6 from the arrow VII direction. It is a perspective view which shows the structure of the magnetic shield with which the transformer which concerns on the 2nd modification of this embodiment is provided. It is a perspective view which shows the structure of the magnetic shield with which the transformer which concerns on the 3rd modification of this embodiment is provided.
  • FIG. 1 is a perspective view showing an appearance of a transformer according to an embodiment of the present invention.
  • a transformer 100 according to an embodiment of the present invention is mounted on a railway vehicle.
  • FIG. 2 is a perspective view showing an assembly structure of an iron core, a winding, and a magnetic shield provided in the transformer according to the embodiment of the present invention.
  • FIG. 3 is a perspective view showing an assembly structure of an iron core, a winding, a magnetic shield, a tank, and an oil passage plate provided in the transformer according to the embodiment of the present invention.
  • 4 is a cross-sectional view of the assembly structure of FIG. 3 as viewed from the direction of arrows IV-IV.
  • FIG. 5 is a perspective view showing a configuration of a magnetic shield provided in the transformer according to the embodiment of the present invention. 1 and 2, an oil passage plate 140 described later is not shown. 3 and 4 show a state where a second housing 132 of a tank 130 described later is removed.
  • a transformer 100 includes an iron core 110, a primary winding (high voltage side coil) 121, and a secondary winding (low voltage side coil) 122.
  • a wire 120, a tank 130, an oil passage plate 140, and a magnetic shield 150 are provided.
  • the iron core 110 includes a plurality of first magnetic plates 10 stacked in one direction.
  • the iron core 110 includes a main leg portion 111 and a side leg portion 112 and a side leg portion 113 that are arranged in parallel with the main leg portion 111 at intervals. Both ends of the main leg portion 111 are connected to both ends of the side leg portion 112 by two connecting portions 114 provided in parallel to each other. Both ends of the main leg portion 111 are respectively connected to both ends of the side leg portion 113 by two connecting portions 115 provided in parallel to each other.
  • the window part W1 is formed in the iron core 110 by the main leg part 111, the side leg part 112, and the two connection parts 114.
  • a window portion W ⁇ b> 2 is formed in the iron core 110 by the main leg portion 111, the side leg portion 113, and the two connection portions 115.
  • Winding 120 (each of primary winding 121 and secondary winding 122) is wound around iron core 110 and passed through each of window portion W1 and window portion W2.
  • a secondary winding 122 is disposed above the primary winding 121, and another secondary winding 122 is disposed below the primary winding 121.
  • Each of primary winding 121 and secondary winding 122 includes, for example, a flat coil formed of a coil conductor made of aluminum or the like wound in the same plane.
  • the tank 130 contains the iron core 110, the winding 120, the oil passage plate 140, and the magnetic shield 150.
  • the inside of the tank 130 is filled with insulating oil (not shown). That is, each of the iron core 110, the winding 120, the oil passing plate 140, and the magnetic shield 150 is immersed in insulating oil.
  • the tank 130 includes a first housing 131 and a second housing 132.
  • Each of the first housing 131 and the second housing 132 has a bottomed cylindrical outer shape so that an accommodation space is formed inside, and a flange is provided at an end.
  • An iron core pressing part 133 is provided over the entire circumference of the peripheral wall of the second housing 132.
  • the flange of the first housing 131 and the flange of the second housing 132 are joined to form an integral tank 130.
  • an oil passage plate 140 is disposed on each of the main surfaces of both the iron cores 110 orthogonal to the stacking direction of the plurality of first magnetic plates 10.
  • the oil passage plate 140 is not disposed on the main surface of the iron core 110 at a portion in contact with the magnetic shield 150 as described later.
  • An oil passage plate 140 is sandwiched between one main surface of the iron core 110 and the inner peripheral portion of the flange of the first housing 131.
  • An oil passage plate 140 is sandwiched between the other main surface of the iron core 110 and the iron core holding portion 133 of the second housing 132.
  • the oil passage plate 140 is formed with a groove portion penetrating in the width direction of the oil passage plate 140.
  • a space surrounded by the groove portion of the oil passing plate 140 and the flange of the first housing 131 serves as an insulating oil flow path.
  • a space surrounded by the groove portion of the oil passing plate 140 and the iron core pressing portion 133 of the second housing 132 becomes a flow path of the insulating oil.
  • the oil passing plate 140 is configured by a press board.
  • the iron core 110 sandwiches the oil passage plate 140 between the flange of the first housing 131 and the iron core pressing portion 133 of the second housing 132. Are sandwiched from both sides in the stacking direction of the plurality of first magnetic plates 10.
  • the magnetic shield 150 includes a plurality of second magnetic plates 151 stacked in a direction orthogonal to the stacking direction of the plurality of first magnetic plates 10.
  • the magnetic shield 150 has a substantially rectangular parallelepiped outer shape.
  • the magnetic shield 150 is preferably thinner than the oil passage plate 140.
  • the magnetic shield 150 further includes a pair of reinforcing plates 152 that sandwich the plurality of second magnetic plates 151 from both sides in the stacking direction of the plurality of second magnetic plates 151.
  • the plurality of second magnetic plates 151 and the pair of reinforcing plates 152 are integrally formed by being bonded to each other with an adhesive.
  • the magnetic shield 150 includes a pair of reinforcing plates 152, thereby increasing the strength.
  • the reinforcing plate 152 is, for example, an iron plate that is thicker than the second magnetic plate 151 and has a slightly larger outer shape.
  • the magnetic shield 150 is in direct contact with the main surface of the iron core 110 facing the inner peripheral surface of the winding 120 and the inner peripheral surface of the winding 120 in the stacking direction of the plurality of first magnetic plates 10. Specifically, the magnetic shield 150 is fitted into a hole H formed between the main surface of the iron core 110 facing the inner peripheral surface of the winding 120 and the inner peripheral surface of the winding 120. Thereby, the iron core 110 and the winding 120 are fixed to each other by the magnetic shield 150. By providing the magnetic shield 150, it is possible to suppress leakage magnetic flux generated by the current flowing through the winding 120 from entering the main surface of the iron core 110 and causing eddy current loss.
  • a wedge-shaped jig is attached to the tip of the magnetic shield 150 in the insertion direction.
  • the wedge-shaped jig is attached to the magnetic shield 150 so that the thin-walled portion of the wedge-shaped jig is on the front end side in the insertion direction and the thick-walled portion of the wedge-shaped jig is on the rear end side in the insertion direction.
  • the wedge-shaped jig is removed from the magnetic shield 150 after the magnetic shield 150 is fitted into the hole H.
  • the iron core 110 and the winding 120 are fixed to each other by the magnetic shield 150, so that a block for fixing the iron core 110 and the winding 120 to each other can be eliminated. .
  • the arrangement space of the blocks can be reduced, and the transformer can be reduced in size and weight.
  • the overall length of the winding 120 can be shortened by reducing the block arrangement space. Since the electrical resistance ( ⁇ ) of the winding 120 is expressed by the product of the total length (m) of the winding 120 and the electrical resistivity ( ⁇ / m) of the winding 120, the total length (m) of the winding 120 The electrical resistance ( ⁇ ) of the winding 120 can be reduced by shortening.
  • the loss (W) in the transformer 100 is expressed by the product of the electric resistance ( ⁇ ) of the winding 120 and the square of the current value (A) flowing through the winding 120.
  • ⁇ the loss (W) in the transformer 100
  • A the current value flowing through the winding 120.
  • the magnetic shield 150 since the magnetic shield 150 includes the pair of reinforcing plates 152 and the strength of the magnetic shield 150 is increased, the magnetic shield 150 can be prevented from being decomposed or buckled and deformed.
  • FIG. 6 is a perspective view showing the configuration of the magnetic shield provided in the transformer according to the first modification of the present embodiment.
  • FIG. 7 is a view of the magnetic shield of FIG. 6 as viewed from the direction of arrow VII.
  • FIG. 8 is a perspective view showing the configuration of the magnetic shield provided in the transformer according to the second modification of the present embodiment.
  • FIG. 9 is a perspective view showing the configuration of the magnetic shield provided in the transformer according to the third modification of the present embodiment.
  • the magnetic shield 250 included in the transformer according to the first modification of the present embodiment extends in the stacking direction of the plurality of second magnetic plates 151 and includes a pair of reinforcing plates 152. It further includes three other reinforcing plates 252 connected to each other.
  • the other reinforcing plate 252 is, for example, an iron plate.
  • the other reinforcing plate 252 is fixed to the surface of each of the plurality of second magnetic plates 151 facing the iron core 110 with an adhesive or solder.
  • One main surface of the other reinforcing plate 252 is in contact with the facing surface of each of the plurality of second magnetic plates 151 facing the iron core 110.
  • the other reinforcement board 252 is not restricted to the case where three are provided, but at least one should just be provided.
  • the magnetic shield 250 includes the other reinforcing plate 252
  • the strength of the magnetic shield 250 is further increased, and the magnetic shield 250 can be further suppressed from being decomposed or buckled and deformed.
  • the thickness of the other reinforcing plate 252 is preferably thin as long as the above effects can be obtained.
  • a plurality of other reinforcing plates 252 are arranged at intervals in a direction orthogonal to the extending direction of the other reinforcing plates 252.
  • the magnetic shield 250 further includes one sliding plate 251 fixed to each of the plurality of other reinforcing plates 252.
  • the sliding plate 251 covers the entire surface of the plurality of second magnetic plates 151 facing the iron core 110.
  • the sliding plate 251 is an iron plate, for example.
  • the sliding plate 251 is fixed to the other main surface opposite to one main surface of each of the plurality of other reinforcing plates 252 with an adhesive or solder.
  • the magnetic shield 250 includes the sliding plate 251
  • a plurality of other reinforcing plates 252 are arranged at intervals in the insertion direction of the magnetic shield 250, one main of the sliding plate 251 and the iron core 110.
  • the magnetic shield 250 can be fitted into the hole H while sliding on the surface. Therefore, it is possible to prevent the step between the other reinforcing plates 252 from being caught by the iron core 110 and preventing the magnetic shield 250 from being fitted into the hole H.
  • the thickness of the sliding plate 251 is preferably thin as long as the above effects can be obtained.
  • the sliding plate 251 may not be provided.
  • the magnetic shield 350 included in the transformer according to the second modification of the present embodiment is composed of only a plurality of second magnetic plates 151 that are bonded together.
  • the magnetic shield 350 can be reduced in size and weight.
  • the transformer 100 can be reduced in size and weight.
  • the magnetic shield 450 included in the transformer according to the third modification of the present embodiment is composed of only a plurality of second magnetic plates 151 that are wound together by a strip-shaped insulator 451. ing.
  • the insulator 451 is made of, for example, a press board, aramid insulating paper, polyimide insulating tape, or the like.
  • the plurality of second magnetic plates 151 are bundled at two locations by the insulator 451, but the insulator 451 may be wound around the whole of the plurality of second magnetic plates 151 without a gap.
  • the insulator 451 can be suppressed from being caught by the inner peripheral surface of the winding 120 and the main surface of the iron core 110 and shifted.
  • the magnetic shield 450 can be reduced in size and weight. As a result, the transformer 100 can be reduced in size and weight.
  • 10 1st magnetic plate, 100 transformer, 110 iron core, 111 main leg, 112, 113 side leg, 114, 115 connection, 120 winding, 121 primary winding, 122 secondary winding, 130 tank, 131 1st housing, 132 2nd housing, 133 iron core holding part, 140 oil passage plate, 150, 250, 350, 450 magnetic shield, 151 second magnetic plate, 152 reinforcing plate, 252 other reinforcing plate, 251 sliding plate , 451 insulator, H hole, W1, W2 window.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

L'invention concerne un transformateur (100) pourvu : d'un noyau de fer (110) comprenant plusieurs premières plaques magnétiques (10) stratifiées dans une direction ; d'un fil de bobinage (120) bobiné sur le noyau de fer (110) ; et d'un blindage magnétique (150) comprenant plusieurs secondes plaques magnétiques stratifiées dans la direction orthogonale à la direction dans laquelle sont stratifiées les premières plaques magnétiques (10). Le blindage magnétique (150) fixe l'un à l'autre le noyau de fer (110) et le fil de bobinage (120) en contact direct avec la surface périphérique interne du fil de bobinage (120) et avec la surface principale du noyau de fer (110), ladite surface principale faisant face à la surface périphérique interne du fil de bobinage (120) dans la direction dans laquelle sont feuilletées les premières plaques magnétiques (10).
PCT/JP2015/068958 2015-07-01 2015-07-01 Transformateur Ceased WO2017002225A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2015559337A JPWO2017002225A1 (ja) 2015-07-01 2015-07-01 変圧器
PCT/JP2015/068958 WO2017002225A1 (fr) 2015-07-01 2015-07-01 Transformateur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/068958 WO2017002225A1 (fr) 2015-07-01 2015-07-01 Transformateur

Publications (1)

Publication Number Publication Date
WO2017002225A1 true WO2017002225A1 (fr) 2017-01-05

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ID=57608141

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/068958 Ceased WO2017002225A1 (fr) 2015-07-01 2015-07-01 Transformateur

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Country Link
JP (1) JPWO2017002225A1 (fr)
WO (1) WO2017002225A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114429855A (zh) * 2022-01-11 2022-05-03 中车株洲电机有限公司 轨道交通同向供电、功率平衡变压器
WO2022194328A3 (fr) * 2021-03-19 2022-12-15 REDUR GmbH & Co. KG Corps de blindage basse tension, transformateur de courant basse tension, agencement de transformateur de courant basse tension ou ensemble électrique basse tension

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS607109A (ja) * 1983-06-24 1985-01-14 Mitsubishi Electric Corp 電力用外鉄形変圧器
JPS60219717A (ja) * 1984-04-16 1985-11-02 Mitsubishi Electric Corp 静止誘導器の磁気遮へい装置
JPS63200312U (fr) * 1987-06-11 1988-12-23
JPH10116741A (ja) * 1996-10-14 1998-05-06 Toshiba Corp 静止誘導電器の磁気シールド及びその取付方法
JP2012028808A (ja) * 2009-11-20 2012-02-09 Mitsubishi Electric Corp 変圧器
JP5010055B1 (ja) * 2011-05-25 2012-08-29 三菱電機株式会社 変圧器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5478430A (en) * 1977-12-06 1979-06-22 Toshiba Corp Stationary induction apparatus
JPH09320860A (ja) * 1996-05-30 1997-12-12 Toshiba Corp 磁気シールド装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS607109A (ja) * 1983-06-24 1985-01-14 Mitsubishi Electric Corp 電力用外鉄形変圧器
JPS60219717A (ja) * 1984-04-16 1985-11-02 Mitsubishi Electric Corp 静止誘導器の磁気遮へい装置
JPS63200312U (fr) * 1987-06-11 1988-12-23
JPH10116741A (ja) * 1996-10-14 1998-05-06 Toshiba Corp 静止誘導電器の磁気シールド及びその取付方法
JP2012028808A (ja) * 2009-11-20 2012-02-09 Mitsubishi Electric Corp 変圧器
JP5010055B1 (ja) * 2011-05-25 2012-08-29 三菱電機株式会社 変圧器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022194328A3 (fr) * 2021-03-19 2022-12-15 REDUR GmbH & Co. KG Corps de blindage basse tension, transformateur de courant basse tension, agencement de transformateur de courant basse tension ou ensemble électrique basse tension
CN114429855A (zh) * 2022-01-11 2022-05-03 中车株洲电机有限公司 轨道交通同向供电、功率平衡变压器

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